Fountain stencil brush



4, 1939. v A, B01-Ts l 2,164,895 FQUNTAN sTENcIL BRUSH Filed Aug. 5, 1937 INVENTOR AL EXANDER Bors Patented July 4, 1939 UNITED STATES PATENT OFFICE FOUNTAIN STENCIL BRUSH Alexander Botts, New York, N. Y.

Application August 5, 1937, Serial No. 157,494

1 o1aims. (o1. 15-139) This invention relates to what are commonly termed stencil brushes used in the application of stencils to boxes, packages, cases and the like in addressing the same for shipment, or in the trade-marking thereof; and the object of the invention is to provide a device of this kind, of the fountain-type, wherein the use of the brush head will automatically control and regulate the feed of ink to the bristles of the brush-head to provide a constant replenishment of the supply of ink thereto, consistent with the use of said brush; a further object being to provide means for adjusting and regulating the feed of ink to the brush-head; a further object being to provide means for adjusting lthe movement of the head, relatively to its supporting body, in which said head is slidably mounted, and normally protected therefrom, by tensional means; and with these and other objects in view the invention consists in a device of the class and for the purpose specified, which is simple in construction, efcientin use, and which is constructed as hereinafter described and claimed.

The invention is fully disclosed in the following specification, of which the accompanying drawing forms a part, in which the separate parts of my improvement are designated by suitable reference characters in each of the views, and in which:

Fig. l is a side and sectional view of a device made according to my invention, showing the parts in normal or projected position;

Fig. 2 is an enlarged sectional detail view of the structure shown in Fig. l, with the parts in V a different position; and,

Fig. 3 is a section on the line 3-3 of Fig. 1, on an enlarged scale.

In practice, I provide a body 5 which may be cast or otherwise formed from any suitable material, and this body is provided centrally of the outer surface thereof with a heXagon or other angular projection 6 which will support the device against rolling, when placed on a surface, and also support the brush of the device in spaced relation to such surface, in a slightly upwardly,

inclined position.

The outer end of the body is provided with a sleeve portion 1, forming a receptacle or cylinder in which a cup-shaped cap 8 ona brushhead 9 is arranged to move inwardly andoutwardly, in the manner of a plunger, the cap 8 having an elongated groove Ill in vone wall thereof, in which a pin Il in the sleeve 1 operates to key the plunger cap 8 against rotary movement. At the inner end of the sleeve or cylinder 1 is a reduced chamber having a threaded circumferential wall as at I2 to receive an adjustable ring I 3, which ring controls and regulates the inward movement of the brush-head as will be apparent. 5

The upper end portion of the body 5 is reduced and externally threaded, as seen at I4, to receive a detachable thimble-shaped container I5 for the ink or other stencilling fluid to be employed. A gasket or sealing ring I6 is disl0 posed between the end of the cylinder and the shoulder I1 of the body part to prevent the leaking of the fiuid at this point. The reduced threaded portion I4 of the body 5 is provided with a small bore or passage I8 in which is slid- 15 ably mounted a tubular feed plunger I9, carrying at its upper end, a detachable and adjustable needle Valve 29, in the form of a headed screw, between which and the end of the tube I9 is supported a washer or gasket 2I, which 20 cooperates with a seat 22 formed at the upper end of the body 5, around the tube I9, and provides a seal preventing the passageof ink or other fluid through the bore I8 around the tube I9. The part 20 also forms a stop limiting the 25 outward movement of the brush-head 9, as will be apparent.

The upper end portion of the tube I9 is provided With radial feed. passages 23, preferably of the contour shown clearly in Fig. 2 of the draw- 30 ing, which passages are opened in the upward movement of the tube I9 to permit the flow of ink or other fluid into the bore 24 of the tube so as to pass downwardly through said bore and outwardly through discharge apertures 25 in the ,35 lower reduced end 26 of said tube, which end extends into the central portion of the bristles, or hairs 9a of the brush-head 9. Centrally of the brush-head 9 is a sleeve 21, which is adapted to be threaded onto an externally threaded por- 40 tion 28 on the tube I9, above the reduced end thereof, and the cap 8 is retained on the threaded portion 28 of the tube I9 by said sleeve 21 and a nut 29 operating upon a Washer 30. It is preferred that the lower portion of the threaded 45 part 28 be flattened at opposite sides, as indicated at 3|, and the aperture 8a in the cap 8 will be of similar contour in order to key said cap against rotary movement on the tube I9.

A substantially conical fibrous gasket and 50 cushioning member 32 is supported on the threaded part 28 of the tube I9 by the nut 29 and another nut 33 and a Washer 34 being also employed, the latter being of greater diameter than the nut'A33 to form a seat for a coil spring 35 55 arranged upon the tube I 9, within a chamber 36 formed in the body 5, as clearly illustrated.

The spring 35 normally serves to project the brush-head 9 and its associated parts outwardly, or to move said parts downwardly through the body part and to support the gasket or sealing ring 2| in seated position, in the manner illustrated in Fig. l of the drawing. However, in applying the brush 9a to a surface in a stencilling operation, the brush-head and its associated parts will be moved upwardly into the position shown in Fig. 2, opening the passages 23 and permitting ink or other fluid to flow downwardly through the feed tube and discharge through the aperture 25.

It will be understood that the seating ring I3 may be adjusted in the body 5 to limit the upward movement of the brush-head which will, to some degree, control the feed of ink through the feed tube, and the feed may also be regulated by the adjustment of the needle valve screw 20. However, when the device is once set for an ink or writing fluid or predetermined consistency and average use, no further adjustment will be necessary. It will also be apparent that the upward movement of the brush-head, or the cap 8 thereof, is cushioned by the member 32 which is disposed between the cap 8 and the seating ring I3, the member 32 being composed of any desirable soft and yieldable material suitable for this purpose.

In the event of the wearing out of the brushhead 9 which consists primarily of the body 9a, the sleeve 21, the cup-shaped shell 9b and top plate 9c, the screw 20 can be detached, after removing the container I5, the entire mechanism, consisting of the parts 8, 9, I9, etc., may be drawn through the lower end of the cylinder 'I and the head 9 detached, and another head placed in position as will be apparent. The brush head may also be changed without removing the entire mechanism by merely unscrewing the brush head from the feed tube I9 and attaching another head in its place. The only other parts that may require replenishing are the gaskets I6, 2I and 32.

It will also appear that my improved device may be readily grasped in the hand, and the contour of the cylinder is such as to provide a desirable handle for the device and the entire device is substantially in one circumferential boundary, except for the slight enlargement in the body 5, and especially the angular head 6 thereof which has its function and purpose as previously stated.

Having fully described my invention, what I claim as new and desire to secure by Letters Patent, is:

1. A stencilling device of the class described comprising a body portion, means on the upper end thereof for attaching a fluid reservoir, the lower end of said body having a sleeve forming a cylindrical receptacle therein, a plurality of cylindrical chambers extending inwardly from and along the axis of said receptacle and having progressively decreasing diameters, the innermost of said chambers opening through the upper surface of said body forming a small cylindrical bore extending through said body, a cup shaped cap slidably mounted in the sleeve of said body, a brush head in said cap, said cap and brush head having central passages, a feed tube extending into the passages of said cap and head and detachably connecting with said head, said tube extending through the cylindrical bore of said body, tensional means centrally of the body for supporting said brush head normally in a downwardly projecting position, means limiting the downward movement of said head and feed tube, adjustable means within said body and cooperating with said cup shaped cap for limiting the upward movement of said head, means on said feed tube exposing the same to a source of fluid supplied in said reservoir in the upward movement of said brush head with respect to said body against the action of said tensional means, and the means limiting the downward movement of the head and feed tube comprising an adjustable needle valve threaded in the upper end of the feed tube and having a head of larger diameter than said tube.

2. A sten'cilling device of the class described comprising a body portion, means on the upper end thereof for attaching a fluid reservoir, the lower end of said body having a sleeve forming a cylindrical receptacle therein, a plurality of cylindrical chambers extending inwardly from and along the axis of said receptacle and having progressively 4decreasing diameters, the innermost of said chambers opening through the upper surface of said body forming a small cylindrical bore extending through said body, a cup shaped cap slidably mounted in the sleeve of said body, a brush head in said cap, said cap and brush head having central passages, a feed tube extending into the passages of said cap and head and detachably connecting with said head, said tube extending through the cylindrical bore of said body, tensional means centrally of the body for supporting said brush head normally in a downwardly projecting position, means limiting the downward movement of said head and feed tube, adjustable means within said body and cooperating with said cup shaped cap for limiting the upward movement of said head, means on said feed tube exposing the same to a source of fluid supplied in said reservoir in the upward movement of said brush head with respect to said body against the action of said tensional means, and means for keying said cup shaped cap against rotation in said body.

3. A stencilling device of the class described comprising a body portion, means on the upper end thereof for attaching a fluid reservoir, the lower end of said body having a sleeve forming a cylindrical receptacle therein, a plurality of cylindrical chambers extending inwardly from and along the axis of said receptacle and having progressively decreasing diameters, the innermost of said chambers opening through the upper surface of said body forming a small cylindrical bore extending through said body, a cup shaped cap slidably mounted in the sleeve of said body, a brush head in said cap, said cap and brush head having central passages, a feed tube extending into the passages of said cap and head and detachably connecting with said head, said tube extending through the cylindrical bore of said body, tensional means centrally of the body for supporting said brush head normally in a downwardly projecting position, means limiting the downward movement of said head and feed tube, adjustable means within said body and cooperating with said cup shaped cap for limiting the upward movement of said head, means on said feed tube exposing the same to a source of fluid supplied in said reservoir in the upward movement of said brush head with respect to said body against the action of said tensional means, means for keying said cup shaped cap against rotation in said body, and means for keying said cap against rotation on said feed tube.

4. A stencilling device of the class described comprising a body portion, means on the upper end thereof for attaching a fluid reservoir, the lower end of said body having a sleeve forming a cylindrical receptacle therein, a plurality of cylindrical chambers extending inwardly from and along the axis of said receptacle and having progressively decreasing diameters, the innermost of said chambers opening through the upper surface of said body forming a small cylindrical bore extending through said body, a-cup shaped cap slidably mounted in the sleeve of said body, a brush head in said cap, said cap and brush head having central passages, a feed tube extending into the passages of said cap and head and detachably connecting with said head, said tube extending through the cylindrical bore of said body, tensional means centrally of the body for supporting said brush head normally in a downwardly projecting position, means limiting the downward movement of said head and feed tube, adjustable means within said body and cooperating with said cup shaped cap for limiting the upward movement of said head, means on said feed tube exposing the same to a source of fluid supplied in said reservoir in the upward movement of said brush head with respect to said body against the action of said tensional means, means for keying said cup shaped cap against rotation in said body, means for keying said cap against rotation on said feed tube, said cap being held against longitudinal movement on the feed tube by the brush head and an inner nut on said feed tube.

5. A holder for fountain stencil brushes of the class described, said holder comprising a tubular body having a small cylindrical passage at one end and a materially larger cylindrical receptacle formed by a sleeve at the other end, the outer surface of said body intermediate the ends having an outwardly projecting angular flange, a spring actuated plunger arranged centrally of said body, one end portion of said plunger closely engaging said cylindrical passage, and means on said end limiting' movement of said plunger in one direction, the other end of said plunger projecting through said cylindrical receptacle and beyond said sleeve, a cup shaped cap slidably engaging the inner wall of said receptacle, a brush head seated in said cup shaped cap and detachably secured to said plunger, adjustable means within said body cooperating with said cup shaped cap for limiting movement of the plunger in the other direction, said plunger being fashioned to form a feed tube through which fluid may be carried to the brush head, and said cup shaped cap being keyed against rotation with respect to said body and with respect to said feed tube.

6. A holder for fountain stencil brushes of the class described, said holder comprising a tubular body having a small cylindrical passage at one end and a materially larger cylindrical receptacle formed by a sleeve at the other end, the outer surface of said body intermediate the ends having an outwardly projecting angular flange, a spring actuated plunger arranged centrally of said body, one end portion of said plunger closely engaging said cylindrical passage, and means on said end limiting movement of said plunger in one direction, the other end of said plunger projecting through said cylindrical receptacle and beyond said sleeve, a cup shaped cap slidably engaging the inner wall of said receptacle, a brush head seated in said cup shaped cap and detachably secured to said plunger, adjustable means within said body cooperating with said cup shaped cap for limiting movement of the plunger in the other direction, said plunger being fashioned to form a feed tube through which fluid may be carried to the brush head, said cup shaped cap being keyed against rotation with respect to said body and with respect to said feed tube, and means on the plunger inwardly of said cap cooperating with said brush head for retaining said cap against longitudinal movement on the plunge-r.

7. An insert for a fountain brush holder of the class described, said holder having a wide sleeve at one end, a small cylindrical passage through the other end and connecting cylindrical chambers inwardly of the ends of said holder, said insert comprising a feed tube adapted to slidably engage said cylindrical passage, a brush head penetrated by and detachably secured to one end of said feed tube, a cup shaped mounting cap adapted to slidably engage the inner wall of said sleeve, said cap being arranged on said feed tube and fitting over 'said brush head, means retaining said cap against longitudinal and rotatory movement on said feed tube, resilient means around said tube adapted to yieldably support the insert in an outwardly projected position in said holder, and means detachably connected with the other end of said feed tube whereby the insert may be coupled and uncoupled with respect to said holder.

ALEXANDER BOT'I'S. 

